Create transcribe_azure.com

resources/classes/transcribe_azure.com

@@ -0,0 +1,256 @@
+<?php
+
+
+ /**
+ * transcribe_azure class
+ *
+ * @method null download
+ */
+if (!class_exists('transcribe_azure')) {
+	class transcribe_azure implements transcribe_interface {
+
+		/**
+		 * declare private variables
+		 */
+		private $api_key;
+		private $api_url;
+		private $language;
+		private $path;
+		private $filename;
+		private $format;
+		private $voice;
+		private $message;
+		private $model;
+
+		/**
+		 * called when the object is created
+		 */
+		public function __construct($settings) {
+
+			//build the setting object and get the recording path
+			$this->api_key = $settings->get('transcribe', 'api_key');
+			$this->api_url = $settings->get('transcribe', 'api_url');
+			$this->language = $settings->get('transcribe', 'language');
+
+		}
+
+		public function set_path(string $audio_path) {
+			$this->path = $audio_path;
+		}
+
+		public function set_filename(string $audio_filename) {
+			$this->filename = $audio_filename;
+		}
+
+		public function set_format(string $audio_format) {
+			$this->format = $audio_format;
+		}
+
+		public function set_voice(string $audio_voice) {
+			$this->voice = $audio_voice;
+		}
+
+		public function set_language(string $audio_language) {
+			$this->language = $audio_language;
+		}
+
+		public function set_translate(string $audio_translate) {
+			$this->translate = $audio_translate;
+		}
+
+		public function set_message(string $audio_message) {
+			$this->message = $audio_message;
+		}
+
+		public function is_language_enabled() : bool {
+			//return the whether engine is handles languages
+			return false;
+		}
+
+		public function is_translate_enabled() : bool {
+			//return the whether engine is able to translate
+			return false;
+		}
+
+		public function get_languages() : array {
+			//create the languages array
+			$languages = array(
+				"af" => "Afrikaans",
+				"ar" => "Arabic",
+				"hy" => "Armenian",
+				"az" => "Azerbaijani",
+				"be" => "Belarusian",
+				"bs" => "Bosnian",
+				"bg" => "Bulgarian",
+				"ca" => "Catalan",
+				"zh" => "Chinese",
+				"hr" => "Croatian",
+				"cs" => "Czech",
+				"da" => "Danish",
+				"nl" => "Dutch",
+				"en" => "English",
+				"et" => "Estonian",
+				"fi" => "Finnish",
+				"fr" => "French",
+				"gl" => "Galician",
+				"de" => "German",
+				"el" => "Greek",
+				"he" => "Hebrew",
+				"hi" => "Hindi",
+				"hu" => "Hungarian",
+				"is" => "Icelandic",
+				"id" => "Indonesian",
+				"it" => "Italian",
+				"ja" => "Japanese",
+				"kn" => "Kannada",
+				"kk" => "Kazakh",
+				"ko" => "Korean",
+				"lv" => "Latvian",
+				"lt" => "Lithuanian",
+				"mk" => "Macedonian",
+				"ms" => "Malay",
+				"mr" => "Marathi",
+				"mi" => "Maori",
+				"ne" => "Nepali",
+				"no" => "Norwegian",
+				"fa" => "Persian",
+				"pl" => "Polish",
+				"pt" => "Portuguese",
+				"ro" => "Romanian",
+				"ru" => "Russian",
+				"sr" => "Serbian",
+				"sk" => "Slovak",
+				"sl" => "Slovenian",
+				"es" => "Spanish",
+				"sw" => "Swahili",
+				"sv" => "Swedish",
+				"tl" => "Tagalog",
+				"ta" => "Tamil",
+				"th" => "Thai",
+				"tr" => "Turkish",
+				"uk" => "Ukrainian",
+				"ur" => "Urdu",
+				"vi" => "Vietnamese",
+				"cy" => "Welsh"
+			);
+
+			//return the languages array
+			return $languages;
+		}
+
+		/**
+		 * transcribe - speech to text
+		 */
+		public function transcribe() : string {
+
+			//get the content type
+			$path_array = pathinfo($this->path.'/'.$this->filename);
+			if ($path_array['extension'] == "mp3") {
+				$content_type = 'audio/mp3';
+			}
+			if ($path_array['extension'] == "wav") {
+				$content_type = 'audio/wav';
+			}
+
+			//start output buffer
+			ob_start();
+			$out = fopen('php://output', 'w');
+
+			if (isset($api_key) && $api_key != '') {
+
+				$url = "https://" . $this->api_url . ".api.cognitive.microsoft.com/sts/v1.0/issueToken";
+				$headers = [
+					"Content-type: application/x-www-form-urlencoded",
+					"Content-Length: 0",
+					"Ocp-Apim-Subscription-Key: " . $this->api_key
+				];
+
+				// initialize a curl handle
+				$ch = curl_init($url);
+
+				//set the request method to POST
+				curl_setopt($ch, CURLOPT_POST, true);
+				
+				//send the http headers
+				curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+				
+				//return the response as a string instead of outputting it directly
+				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+
+				//run the curl request to get the access token
+				$access_token = curl_exec($ch);
+
+				//close the handle
+				curl_close($ch);
+ 
+				//if a token was returned then use it to make the transcribe request
+				if (empty($access_token)) {
+					return false;
+				}
+				else {
+					$url = "https://" . $this->api_url . ".stt.speech.microsoft.com/speech/recognition/conversation/cognitiveservices/v1?language=" . $this->language . "&format=detailed";
+					$file_path = $file_path . '/' . $file_name;
+					$headers = [
+						"Authorization: Bearer " . $access_token,
+						"Content-type: audio/wav; codec=\"audio/pcm\"; samplerate=8000; trustsourcerate=false"
+					];
+
+					//initialize a curl handle
+					$ch = curl_init($url);
+
+					//set the request method to POST
+					curl_setopt($ch, CURLOPT_POST, true);
+
+					//send the http headers
+					curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+					
+					//send the file using 
+					curl_setopt($ch, CURLOPT_POSTFIELDS, file_get_contents($file_path));
+
+					//return the response as a string instead of outputting it directly
+					curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+
+					//add verbose for debugging
+					curl_setopt($ch, CURLOPT_VERBOSE, true);
+					curl_setopt($ch, CURLOPT_STDERR, $out);
+
+					//run the curl request to transcribe the message
+					$json_response = curl_exec($ch);
+
+					//check for errors
+					if (curl_errno($ch)) {
+						echo 'Error: ' . curl_error($ch);
+						exit;
+					}
+
+					//close the handle
+					curl_close($ch);
+
+					//convert the json to an a
+					$array = json_decode($json_response, true);
+
+					//validate the json
+					if ($array === null) {
+						return 'invalid json';
+					}
+					else {
+						$this->message = $array['NBest'][0]['Display'];
+					}
+				}
+
+			}
+
+			//return the transcription
+			if (empty($this->message)) {
+				return '';
+			}
+			else {
+				return $this->message;
+			}
+
+		}
+
+	}
+}
+
+?>